Die opening gauge



July 15, w40- K G. s. SELANDER- 2,208,476

DIE OPENING GAUGE Inventor Z2 l t *9e/maler July 16, 1940. s, SELANDER 2,208,476

DIE OPENING GAUGE Patented July 16, 1940 UNITED STATES PATENT OFFICE l 1 Claim.

The present invention appertains to new and useful improvements in measurement instruments and more particularly to a gauge for measuring accurately the slope or angularity of openings in blanking dies.

The principal object of the present invention is to provide a gauge which in construction involves an arm which can be readily slipped into the die opening and' by simply sliding the gauge along 'the outside of the die indication will be given on the instrument of the angularity of the wall of thel opening.

1Various other objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a side elevational view of the gauge shown in use in conjunction with the die.

Figure 2 is a top plan view of the instrument.

Figure 3 is a vertical sectional view.

Figure 4 is a perspective view of the rocker arm.

Figure 5 is a perspective view of the lever.

Figure 6 is a perspective view of the spring unit.

Figure 7 is a front elevational view of the case with the cover plate and internal mechanism removed.

Referring to the drawings wherein like numerals designate like parts, it can be seen that the case generally referred to by numeral 5 in Figure 7, consists of the back wall 6, side walls 1-1 and the removable front wall 8. One side wall is slotted downwardly at its portion as at 9 to permit the external portion of the arm Il) to extend therethrough, and this slot 9 defines the bridge piece I I which has the beveled gauge or graduation face l2. Between the lower portion of the bridge piece I and the top of the front plate 8 is the space I3 through which the upper portion of the indicating arm I4 extends, this arm having its upper portion bent inwardly toward the face I2 to denne the pointer tip I5.

Extending through the case 5 and through the opening I'I of the arm I0 is the pin I6.

The bottom 6 of the case has the raised boss I8 apertured to receive the screw I9 on which the arm I4 is swingable. A pin 20 extends from 50 the pointer arm I4 and through the forked lower end of the rocker 22. The heel portion of the inverted L-shaped lever 22 has an opening 24 through which the pivot pin 23 extends, this pin being driven into the back wall 6 of the case 5. 55 The toe portion o-f the upper portion of the lever 22 has the outstanding pin 26 (see Figure 5) which extends into the space of the yoke end of the lever I0, this space being denoted by numeral 2l.

A pin 29 extendslaterally from the lever 22 5 below the pivot pin 23 and has the upstanding leg 32 of the Y-shaped spring 3| engaging the same as shown in Figure 1.

This Y-shaped spring 3| has the trunk portion 3|a; anchored as at 34 .and includes the 10 additional leg 33 which is disposed upwardly and bent back downwardly as at 33a. to terminate in the hook formation 33D which is engaged under the pin 20 which extends from the pointer arm I4. l5

In the use of the instrument the tapered end portion ofthe arm I0 is inserted in the opening of the die and the case of the instrument is held firmly against the outer side of the die. With -a slight downward pressure of the instrument the 20 `arm will assume a rested position on the surface of the dieopening. At this point the instrument is stopped and the reading taken by comparing the pointer tip I5 with the dial |2. In this manner the angularity of the opening can be readily 25 determined.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in theA shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention', what is claimed as new is:

In a gauge for indicating the inclination of a wall of van opening in a blanking die, a casing having a flat side edge for sliding engagement with said die, a dial plate on said casing exteriorly thereof, a pointer pivoted at one end in said cas- 40 ing and having the other end thereof extending out of the casing alongside said dial for reading against the same, a gauge rod pivoted intermediate its ends in said casing to provide a lever arm therein and a gauge arm extending out of said 45 side of the casing for insertion into said opening and swinging flat against said wall under sliding of said casing, and operating connections between said lever arm and said pointer comprising a bell crank lever in said casing pivoted therein and having long and short lever arms pivotally and slidably connected to said pointer and the lever arm of said rod respectively.

GUSTAF Si. SELANDER. 

